2∶17型Sm-Co高温永磁体的研究  

Study of 2∶17-Type High Temperature Sm-Co Permanent Magnets

作　　者：郭朝晖[1] 潘伟[1] 李岫梅[1] 胡新建[1] 秦英[1] 李卫[1] 

机构地区：[1]钢铁研究总院功能材料研究所,北京100081

出　　处：《稀有金属》2003年第5期552-554,共3页Chinese Journal of Rare Metals

基　　金：国家自然科学基金资助项目 ( 5 0 0 710 5 1:5 0 2 0 10 0 4);国家高技术研究发展计划 ( 863 )资助项目 ( 2 0 0 1AA3 2 0 40 1)

摘　　要：用粉末冶金工艺制备了Sm(CobalFevCu0 .0 88Zr0 .0 2 5) 7.5(v =0～ 0 .3 0 )烧结磁体 ,通过系统研究Fe含量对磁体的室温及高温磁性的影响 ,制备出了具有很好的高温稳定性的永磁材料Sm(CobalFe0 .0 7Cu0 .0 88Zr0 .0 2 5) 7.5,在 5 0 0℃时其磁性能为 :Br=0 .687T ,bHC=42 9.7kA·m- 1 ,iHC=63 7 4kA·m- 1 ,(BH) max=83 .7kA·m- 1 。比较了该材料与商业用高矫顽力Nd Fe B和高矫顽力 2∶17型Sm Co磁体的高温磁性。The effect of Fe content on room and high temperature magnetic properties of Sm(Co bal Fe v Cu 0.088 Zr 0.025 ) 7.5 ( v =0～0.30) sintered magnets, prepared by the conventional powder metallurgy method, were systematically studied. High temperature permanent magnets with high stability could be achieved in Sm(Co bal Fe 0.07 Cu 0.088 Zr 0.025 ) 7.5 sintered magnets. B r of 0 687 T, b H C of 429 7 kA·m -1 , i H C of 637 4 kA·m -1 , and ( BH ) max of 83 7 kJ·m -3 at 500 ℃ are obtained. The high temperature magnetic properties of Sm(Co bal Fe 0.07 Cu 0.088 Zr 0.025 ) 7.5 , commercial high coercivity Nd Fe B, and 2∶17 type Sm Co magnets are compared.

关 键 词：2:17型Sm-Co合金 永磁材料 高温磁体 

分 类 号：TF123.2[冶金工程—粉末冶金]